Corner-joint



J. K. SHAW.

CORNER JOINT.

APPLICATION FILED MAY 23, I918.

Patented May 3, 1921.

UNITED STATES PATENT OFFICE.

JOHN x. snaw, or unmnnoms, MINNESOTA, ASSIGNOB r 3. e. nmmnne, or

ST. PAUL, MINNESOTA. 4

GORNER-JOINT.

Specification of Letters Patent.

Patented May 3, 1921.

Application filed May 23, 1318. Serial No. 238,163. I

Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements 1n Corner- Joints; and I do hereby declare the follow ing to be a full, clear, and exact description Y of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to corner joints for inclosure Walls made of fiber board and has for its object to improve the joints heretofore proposed.

W1th this and other objects in vlew the 1nvention consists in the details of construcnon and combinations of-parts more fully hereinafter described and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the views:

Figure 1 is a perspective view of the corner of a house made in accordance with this invention;

Fig. 2 is a longitudinal view of a portion of the parts shown in Fig. 1;

Fig. 3 is a cross sectional view taken on line 33 of Fig. 2 looking-in the direction of the arrows; and

Fig. 4 is a perspective view of one of the metallic fastenings appearing in Figs. 1 and 3.'

1, 2 and 3 represent the vertical timbers constituting the main support of the structure at its corners, 4 and 5 indicate horizontally. disposed side wall members serving to strengthen and support the corner structures; 6 and 7 represent wedge shaped mem bers or blocks which are'located between the side wall members 5 and 4 and outer board members presently to be described,

and Whose extreme outer edges are fragile and are therefore difficult to secure and proinch to 1 inch long; mixed with these slivers K. SHAW, a-

are long thread like fibers, say, from 1/32 to 1/64 inches in diameter and 1 inch or 2 inches long mixed with these slivers and thread like fibers are hair like fibers of a dlameter of, say, 1/100 to 1/200 of an inch and, say, from 1/2 inch to'l inch long; and mixed with the preceding fibers are the regular paper making fibers. The result is a boardof unusual lightness, say, not over ..20 or .30 specific gravity. It is of a veryhighly porous nature, and closely resembles cork in its physical properties, hence its extraordinarily high heat insulating qualities. But, the very great porosity and very great differences in the coarseness of its fibers render the edges such as 8 of the boards 9 very brittle and easily frayed, and therefore, it is difficult to secure said edges at the corners of houses and other inclosures, without producing a more or less ragged appearance. It, therefore, becomes a serious problem to provide a fastening means which will have, not only a Suflicient strength to be.

efficient in practice, but, also, sufficiently lasting to stand the rapidly deteriorating influences of the weather on the exposed raw edgesof the material.

In order to avoid these objections, that are inherent in the material, while, at the same time, to secure its high heat insulating qualities, Iprovide a metal strip 10, bent at right; angles to form the sides 11 and 12, and after a board such as 13, Fig. 3 is brought to place and secured to the corner timbers as by the nails 14, I insert the'side 12 of the strip 10 into the edge 15 of said board 13, and I lay the side 11 of the strip 10 flat against the Wedge 6 as shown. After said stri 10 is thus brought to position, its side 11 1s nailed through the wedge 6 and side wall 5 as by the nails 16, and said paper board strip 13 will be secured in place, with its edge 15 flush with the outer edge of said wedge 7 as shown. Next the fiber board or strip 17 is broughtto place with its edge 18 flush with the outer surface of the board 13 audit is nailed through said side 11, said wedge 6 and said side 5 as by the nails 20. In the case of the strips 9 and 22 the strip 22 is overlapped by the edge 23 of, the strip 17, and the strip 9 is overlapped by the edge 24 of the strip 13 while the edge 8 of the strip 9 corresponding to edge 15 of strip 13' comes up flush with the outer surface of the strip 22 instead of being overlapped by said strip in the manner illustrated in Fig. 3. In other words, the end edges of alternate pairs of strips such as 13, 17, 9 and 22 are staggered, so to speak, in such a manner that the rough raw edges such as 8 and 18 of a pair of strips 17 and 27, will always be separated by the fiat surface of an intermediate strip such as 9, and, therefore, more protected than would otherwise be the case. 1

As the strips such as 17, 22, 27, etc., overlap as shown in Fig. 2, it is evident that cracks, or triangular spaces will be left between said strips and their corresponding walls 5, but these spaces are filled with the wedge shaped pieces 6 which may be of wood, or of fiber material.

The interior of the inclosure or building may be provided with walls 2:0 and 41 of fiber material, which may be covered with plaster 42, and the corner of which conveniently fits into a space formed by offsetting the timbers 2 and 3, thus forming an air space 43 as shown.

\Vhat I claim is:

1. A building comprising side walls of timber material supported by corner members, said timber material being covered with boards of porous fiber board material whose end edges are fragile and overlap in pairs at the corners of said building; each pair of said fragile end edges provided with a metal strip having side members disposed at an angle to each other, one of said side members entering the fragile, overlying edge of one of said pair of boards, and the other of said side members underlying the other fragile end edge of said pair of boards, and

the whole structure being securely nailed together, substantially as described.

In an inclosing structure the combination of corner timbers; side walls secured to said timbers overlapping side wall members of porous, heat insulating fiber board material secured to one of said side walls; overlapping side wall members of porous, heat insulating fiber board material secured to the other of said side walls; the extreme end edges of said material being fragile and susceptible to injury form the weather; Wedge members disposed between said first named side walls and-said fiber board material; and angular shaped securing metal strips entering the fragile edges of one set of said overlapping board members and underlying the other end surfaces of the other set, substantially as described.

3. In a house the combination of a corner structure; a side wall member secured to said structure; a second side wall member secured to said structure and disposed at an angle to said first named side wall member; a set of porous overlapping fiber boards of high heat insulating properties secured to said first named side wall member; a second set of overlapping fiber boards secured to said second side wall member; the alternate meeting edges of pairs of said boards being fragile and overlapping each other; an angular shaped metal strip entering the fragile edge of one board of a pair and underlying the other board of said pair, and said edges being nailed together through said metal strip, substantially as described.

In testimony whereof I afiix my signature.

JOHN K. SHAW. 

